Programming
TypeScript Best Practices
Mike Johnson
6 min read
TypeScript has become the standard for building scalable JavaScript applications. Let's explore best practices.
## Type Safety
Always define types explicitly when they can't be inferred. This helps catch errors early and improves code documentation.
## Common Best Practices
1. **Use strict mode**: Enable strict TypeScript compiler options
2. **Avoid 'any'**: Use proper types instead of the 'any' type
3. **Interface over Type**: Use interfaces for object shapes
4. **Const assertions**: Use 'as const' for literal types
5. **Utility types**: Leverage built-in utility types like Partial, Pick, Omit
## Code Organization
- Keep types close to where they're used
- Use index files for clean imports
- Separate concerns with proper file structure
## Testing
TypeScript makes testing easier by catching errors at compile time. Combine it with good unit tests for robust code.
## Conclusion
Following these best practices will help you write better TypeScript code that's easier to maintain and scale.